The URL is http://www.presidencia.gob.mx/?P=2&Orden=Leer&Tipo=Pe&Art=8410
This one looks like it goes to his radio show: foxcontigo@presidencia.gob.mx
There are links to e-mails to a lot of the government offices on this page:
http://www.directorio.gob.mx/comunicacionsocial.php and here:
http://www.directorio.gob.mx/comunicacionsocial.php?categoria=184
The ambassador to the USA:
Correo Electrónico: mexembusa@aol.com mexembusa@sre.gob.mx